Micrometer-gage.



A. R. LAUBSCHER.

I MICROMETEH GAGE.

APPLICATION FILED Aue.4. I916.

1 28 ,791 w Patented June 5, 1917'.

mbcm roz I ALBERT R. LAUBSGHER, OF BRIDGEPORT, CONNECTICUT.

mcaomnraa-eacn.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed August 4, 1916. Serial No. 113,123.

To all whom it may concern.

Be it known that I, ALBERT R. LAUBscHER, a citizen of the United States, and resident of Bridgeport, in the county of Falrfield and State of Connecticut, have invented certain new and useful Improvements n Micrometer-Gages, of which the following is a specification.

This invention relates to combined m1- crometer and measuring tools such as are used by machinists, tool-makers and the like.

The object of the invention is toprovide an improved form of tool for metal working, whereby thousandths and fractions of thousandths of an inch, may be readily measured and determined; further to provide a tool for the above purpose which will be particularly accurate and easily operated; to construct the device in a substantial yetrelatively simple manner, and finally to provide a tool of the above class which can be adjusted from time to time to take up such wear as may occur and so as to insure accuracy in'operation.

With these and other objects in view the invention resides and consists in the conddl ings forming a struction and novel combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claim hereto appended, it being'understood. that various changes in the form, proportion, size and minor details of construction within the scope of the claim may be-resorted to Without departure from the spirit or sacrificing any of the advantages of the invention.

Similar characters of reference denote ike or corresponding parts throughout'the several figures of the accompanying drawpart of this specification, and upon which,

Figure 1 shows a side elevation of my improved micrometer gage complete.

Fig. 2 is a plan view of the same.

Fig. 3 is a central vertical longitudinal section.

Fig. 4: is a detached side elevation. of the nut and shank carried by the adjusting screw and Fig. 5 shows a side View of a scribing attachment which is adapted to be used. in connection with the gage.

Referring. in detail to the characters of reference marked upon the drawings represents the body of the instrument, 11 an attachable base which may or may not be used in connection with the bod by screws 12. -This base is preferably ade Wider 'than the body as will be noted from Fig. 2

and is designed to be used in connection with heavy Work.

The top edge portion of the body is finished off at an angle with respect to the ends of the body forming an inclined surface 13. This topinclined edge'portion is cut out to form a guideway 14, to receive the slide block 15, and to form a finished recess 16 to accommodate the adjusting screw 17. Ribs l8-18 are formed in the side walls of the under side of the slide block and thetop bearing surface of the nut 20 slidably operate.

The block is provided with an inclined and ribbed bottom surface which is smoothly finished to fit and slide upon and in the top surface of the body, and is adapted to be drawn back and forthand up and down upon the body by the operation of the screw 17 before mentioned. This block is provided with a graduating mark upon one side, that is designated made to register with any one of the series of graduations upon the side of the body as shown in Fig. 1, and indicated by the numerals 1,2, 3, 4 and 5.

The screw 17 is mounted in a bearing 21 that is fitted in the upper end of the body and in alinement with the inclined longi tudinal recess formed in the top of the body, and serves to engage the nut that carries the slide block. This bearing is fitted into an end opening in the block and is secured in positionv by means of a screw 22. A11

operating handle 23 is secured to the outer end of the screw by means-of a pin 24 so as to insure the turning of the'screw with the turning of the handle. The peripheral surface 25 of the bearing 21 is provided with a mark 0 as shown in Fig. 1 and the surface of the handle is provided with a series of graduation marks indicated by the numerals 0 to 9 inclusive and which are brought to register with the mark 0 of the fixed bearing. These graduations obviously represent fractions of the-graduation marks on the side of the body and are used to determine very fine measurements with relation to the said graduations.

a The pin 26 seated in the top of the slide recess against which the by 0 and which is block 1 5 is of interchanged with wear should it occur,

duced threaded end standard height and may be a longer or shorter pm to-take care of the large differences in distances to be measured. In this connection it might be explained that if'the tool'is used for measuring heights as would be indicated from the position of the instrument shown in the drawings, the measurements would be made from the base of the tool to the top of this pin 26, said distance being lengthened and shortened by the operation of the screw and the movement of the block and its pin up and down the incline. The shank 27 of the nut 20, extends out through a hole in the block and is clamped thereto by means of nuts as shown. The tapered threaded ends of the nut are split as indicated by 29 in Fig. 4 and upon each of these split ends is screwed a small nut 30 that serves for adjusting the nut to the screw, to take up the and thus insure a prompt response and movement of the nut the turning ofthe screw.

The scribing attachment shown in Fig. 5 is carried by a post 31, which has its reseated in a hole of-the slide block and upon the upper end is secured a clamp 32 that carries an adjustable arm 33 the ends of which are pointed to form a contact point or marker to engage the stock to be scribed. When this scribing attachment is not in use, it may be replaced by thepost 34 shown seated in the threaded 'inga shank that extends hole in'the block, as indicated in the drawings.

Having thus described my invention, what I claim and desire to secure by Letters Patcut, is:

A gage of the class described, com ris I body having an inclined top sur ace, with a ribbed guideway formed therein, an

attached elongated bearing in alinement with the guideway and having-a graduation mark indicated thereon, a slide block mounted 1n th guideway, and having a graduat1on mark indicated thereon, a screw rotatably mounted in the bearing, a handle attached to the screw and having a series of graduation marks upon its periphery to register with the mark upon the bearing, a spl1t slide nut mounted upon the screw within the body and having a threaded through a hole in the slide-block, means ,to engage the shank for clamping the block to the body, nuts upon the split slide nut to take up wear and tighten the nut to the screw, a base remov-,

ably attached to the'body, a post carried upon the slidable block, and a scribing attachment carried upon the post.

Signed at Bridgeport, in the county of Fairfield and State of Connecticut this third day of August, A. D. 1916.

' ALBERT R. LAUBSCHER. Witnesses:

C. M. NEWMAN, LILLIAN M. ALLING. 

